const std = @import("std"); const interpreter = @import("interpreter.zig"); const io = @import("io.zig"); const spoon = @import("spoon"); var term: spoon.Term = undefined; var args: [][:0]u8 = undefined; var intp: *interpreter.Interpreter = undefined; pub fn main() anyerror!void { //--- befunge initialization ---------------------------------------------- var gpa = std.heap.GeneralPurposeAllocator(.{}){}; defer std.debug.assert(!gpa.deinit()); args = try std.process.argsAlloc(gpa.allocator()); defer std.process.argsFree(gpa.allocator(), args); if (args.len < 2) { std.debug.print("Usage: {s} \n", .{args[0]}); std.os.exit(1); } var file = try std.fs.cwd().openFile(args[1], .{}); defer file.close(); const env: []const [*:0]const u8 = std.os.environ; intp = try interpreter.Interpreter.init(gpa.allocator(), file.reader(), null, args, env[0..]); defer intp.deinit(); var ioContext = io.context(std.io.getStdIn().reader(), std.io.getStdOut().writer()); // TODO io functions for tui //--- Term initialization ------------------------------------------------- try term.init(.{}); defer term.deinit(); try std.os.sigaction(std.os.SIG.WINCH, &std.os.Sigaction{ .handler = .{ .handler = handleSigWinch }, .mask = std.os.empty_sigset, .flags = 0, }, null); var fds: [1]std.os.pollfd = undefined; fds[0] = .{ .fd = term.tty.handle, .events = std.os.POLL.IN, .revents = undefined, }; try term.uncook(.{}); defer term.cook() catch {}; //--- Main loop ----------------------------------------------------------- try term.fetchSize(); try term.setWindowTitle("zigfunge98-tui", .{}); try render(); var buf: [16]u8 = undefined; var done = false; while (!done) { _ = try std.os.poll(&fds, -1); const read = try term.readInput(&buf); var it = spoon.inputParser(buf[0..read]); while (it.next()) |in| { if (in.eqlDescription("escape") or in.eqlDescription("q")) { done = true; break; } else if (in.eqlDescription("s")) { if (try intp.step(&ioContext)) |code| { std.os.exit(@intCast(u8, code)); } try render(); } } } } fn handleSigWinch(_: c_int) callconv(.C) void { term.fetchSize() catch {}; render() catch {}; } fn render() !void { var rc = try term.getRenderContext(); defer rc.done() catch {}; try rc.clear(); if (term.width < 80 or term.height < 24) { try rc.setAttribute(.{ .fg = .red, .bold = true }); try rc.writeAllWrapping("Terminal too small!"); return; } const pointer = intp.getPointer().getInfo(); try rc.moveCursorTo(0, 0); var filename = rc.restrictedPaddingWriter(term.width); try filename.writer().print("{s} | steps:{d}", .{ args[1], 0 }); try rc.moveCursorTo(2, 0); try rc.setAttribute(.{ .fg = .green, .reverse = true }); var stack = rc.restrictedPaddingWriter(16); try stack.writer().writeAll("---- Stack ----"); try rc.moveCursorTo(2, 18); try rc.setAttribute(.{ .fg = .blue, .reverse = true }); var fieldTitle = rc.restrictedPaddingWriter(term.width - 17); const size = intp.getField().getSize(); try fieldTitle.writer().print("Funge field | top left corner:({d},{d}) size:{d}x{d}", .{ size[0], size[1], size[2], size[3] }); try fieldTitle.pad(); try rc.setAttribute(.{ .fg = .blue, .reverse = false }); var y: usize = 0; // TODO negative lines while (y < @min(@intCast(usize, size[3]), term.height - 3)) : (y += 1) { var field = rc.restrictedPaddingWriter(term.width - 17); const line = intp.getField().getLine(y); const data = line.getData(); var x: usize = 0; if (line.getX() >= 0) { try rc.moveCursorTo(y + 3, 18 + @intCast(usize, line.getX())); } else { try rc.moveCursorTo(y + 3, 18); // TODO negative columns } while (x < @min(data.items.len, term.width - 18)) : (x += 1) { if (x == pointer.x and y == pointer.y) { try rc.setAttribute(.{ .fg = .magenta, .reverse = true }); } if (x == pointer.x + pointer.dx and y == pointer.y + pointer.dy) { // TODO optmize that? try rc.setAttribute(.{ .fg = .magenta, .reverse = false }); } if (data.items[x] >= 32 and data.items[x] < 127) { try field.writer().print("{c}", .{@intCast(u8, data.items[x])}); } else { try field.writer().writeAll("®"); } if (x == pointer.x and y == pointer.y or x == pointer.x + pointer.dx and y == pointer.y + pointer.dy) { try rc.setAttribute(.{ .fg = .blue, .reverse = false }); } } } }